继承和组合混搭下的构造和析构

传智扫地僧课程学习笔记。

原则：     先构造父类，再构造成员变量、最后构造自己

                 先析构自己，在析构成员变量、最后析构父类

不清楚了，把代码再跑一遍看看，

#include <iostream>using namespace std;class Object{public:Object(int a, int b){this->a = a;this->b = b;cout<<"object构造函数 执行 "<<"a"<<a<<" b "<<b<<endl;}~Object(){cout<<"object析构函数 \n";}protected:int a;int b;};class Parent : public Object{public:Parent(char *p) : Object(1, 2){this->p = p;cout<<"父类构造函数..."<<p<<endl;}~Parent(){cout<<"析构函数..."<<p<<endl;}void printP(int a, int b){cout<<"我是爹..."<<endl;}protected:char *p;};class child : public Parent{public:child(char *p) : Parent(p) , obj1(3, 4), obj2(5, 6){this->myp = p;cout<<"子类的构造函数"<<myp<<endl;}~child(){cout<<"子类的析构"<<myp<<endl;}void printC(){cout<<"我是儿子"<<endl;}protected:char *myp;Object obj1;Object obj2;};void objplay(){child c1("继承测试");}void main(){objplay();cout<<"hello..."<<endl;system("pause");return ;}